The Sonus RT5 Deluxe features a two-piece solid figured maple body mated to a custom-tapered, bolt-on maple neck with a rosewood fingerboard. Electronics consist of two custom EMG single-coil pickups and a custom Bartolini preamp. Active tone controls offer bass, midrange, and treble boost/cut of ±15dB. The midrange is centered at 400 Hz, providing variable tonal weight and depth. Volume and pickup-blend controls allow further sonic shaping.

An alternate version of the Sonus RT5 Deluxe is the Sonus RT5. This bass shares most of the Deluxe’s features, incorporating a 2-band EQ system (treble and bass boost/cut) with a two-piece maple body and a bookmatched figured maple top.